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Yes, but with poor cable connections, so probably bad connection(lack of good tools?). Works fine at the moment?

When using the brake sensor cable for use of gear shift sensor, can the delay time be adjusted with USB cable programming? On my controller bbs02 is an extra cable, I presume for lightning? It's 2 wire connector.

OK, problem was a loose welding in the battery with on/off contact so difficult to pinpoint. This explains the wiggling. Also, the light up after about 15/30 min for a glimp, was the internal battery from the display. Thanks everyone for the inputs?

Plan for tommorow;install my battery on my wife's 750w bafang, than recheck the new installed controller and wiring, than throw the bike away??

It is 48v lifepo4 25a pack custom made 3,2 v batteries

I know, but I don't have the knowledge, and I don't find shops who wants to work on ebike, not bought there or really going on a deep search, so I have to follow suggestions of forummembers

I used another working battery with same result. I will disconnect the controller once again to check?

After testing with other battery it seems OK, but when wiggling the bike, power is cutoff. This only happens when charger is not connected, with charger on, power stays on, even with wiggeling. Any idée? Same result on both battery's, with charger loading, everything stays good, without...

Batterypack has just new bms and fully checked. I switched the display c961 with c965 that I use on same type bafang 750w on another ebike. I am going to switch the battery and try again.

I already replaced battery bms, controller and display, but problem still exist. My bafang 750w shuts completely down after 1 sec, just a flash on the display and that's it. Problem occurred 1st time after 18 km and when using throttle for 200m (first time so long). Now, at mornings, it starts...